Sahih Bukhari, Volume 4, Book54, Number 440

Narrated Abu Salama:
‘Aisha said that the Prophet said to her “O ‘Aisha’ This is Gabriel and he sends his (greetings) salutations to you.” ‘Aisha said, “Salutations (Greetings) to him, and Allah’s Mercy and Blessings be on him,” and addressing the Prophet she said, “You see what I don’t see.”
Sahih Bukhari, Volume 4, Book54, Number 440